等)，tagsInput 是用户用于输入的文本框(通常应该为
)，应该包含在 tagsBox 之内；
* 通常的 DOM 结构是：
*
*
* 用户在 tagsInput 中完成输入（敲击空格或回车）时，用户输入的内容会被以空白符为间隔，解析成若干个 tag；
* 这些 tag 将被插入到 tagsBox 之内，位于 tagsInput 之前；
* tag 的 DOM 结构请参阅 './tagTpl.tpl' 文件
* 2) tagsBox 需添加样式名“wgt_tagsInput”，如果不使用默认样式，则可忽略此要求
* 3) resetTags() 方法将使用参数传入的标签文本，重新生成并渲染全部 tag(tagsBox 中原有的 tag 将被移除)
* 4) TriggerTagAdd 参数用于配置触发添加 tag 的行为，可选值有 ENTER，SPACE，BLUR，支持多种行为，以 | 分割
* 4) onTagAdd() 回调被调用时，传入参数：1.{Array} 新增 tag 的文本数组；2.{jQuery Object} 新增 tag 的 jQuery 对象
* 5) onTagRemove() 回调被调用时，传入参数：1.{String} 被移除 tag 的文本内容
* 6) onTagsInputComplete() 回调被调用时，传入参数：1.{Array} 全部 tag 的文本数组；2.{jQuery Object} 全部 tag 的 jQuery 集合对象；
* 如果 tagsMaxCount 没有被指定(默认值Infinity)，则此回调永远不会被调用
*
* @example // 典型的调用示例
var TagsInput = require('wiki-common:widget/ui/tagsInput/tagsInput.js');
var tagsInput = new TagsInput({
tagsBox: '#tagsInputBox #tagsBox',
tagsInput: '#tagsInputBox #tagsInput',
tagsMaxCount: 5
});
*/
var $ = require('wiki-common:widget/lib/jquery/jquery'),
JSmart = require('wiki-common:widget/lib/jsmart/jsmart'),
safeCall = require('wiki-common:widget/util/safeCall');
JSmart.prototype.registerPlugin('modifier', 'trim', $.trim);
var tagTpl = new JSmart("\n
\n{%$tag.text|trim|escape|f_escape_xml%} \n{%if !$clickRemove%}\n× \n{%/if%}\n \n".replace(/\s*\s*/g, ''));
// 构建 tags
function buildTags() {
var inputText = $.trim(this.tagsInput.val());
if (!inputText) {
return;
}
if (!this.ignoreSpace) {
var newTagsText = inputText.split(/\s+/);
} else {
var newTagsText = inputText.split(/\n+|\r+/);
}
// validate
if (this.validation && !safeCall(this.validation, [newTagsText], this)) {
return;
}
var newTags = [];
for (var i in newTagsText) {
newTags.push({
text: newTagsText[i]
});
}
var newTagHTML = '';
for (var i in newTags) {
newTagHTML += addTag.call(this, newTags[i]);
}
newTagNodes = $(newTagHTML);
this.tagsInput.val('');
safeCall(this.onTagAdd, [newTags, newTagNodes], this);
var tags = $('.tag', this.tagsBox);
if (tags.length >= this.tagsMaxCount) {
this.tagsInput.hide();
safeCall(this.onTagsInputComplete, [$('.tag-con', tags).map(function() {
return $(this).text();
}), tags], this);
}
}
// 构建 tag 元素
function addTag(tagData) {
var curTagsCount = $('.tag', this.tagsBox).length;
if (curTagsCount >= this.tagsMaxCount) {
return;
}
var tagHTML = tagTpl.fetch({
tag: tagData,
clickRemove: this.clickRemove
});
var tag = $(tagHTML);
if (tagData.data) {
tag.data(tagData.data);
}
if (this.tagsBox.find('.tag').length > 0) {
this.tagsBox.find('.tag:last').after(tag);
} else {
this.tagsBox.prepend(tag);
}
return {
tagHTML,
tag
};
}
// 移除 tag 元素
function removeTag(tag) {
if (tag.length) {
safeCall(this.onTagRemove, [$('.tag-con', tag).text(), tag], this);
tag.remove();
}
}
var timer = '';
function TagsInput(args) {
if (!args) {
throw new Error('[TagsInput Exception]: No arguments.');
} else if (!$(args.tagsBox).length) {
throw new Error('[TagsInput Exception]: Invalid argument "tagsBox".');
} else if (!$(args.tagsInput).length) {
throw new Error('[TagsInput Exception]: Invalid argument "tagsInput".');
} else {
this.tagsBox = $(args.tagsBox);
this.tagsInput = $(args.tagsInput);
this.tagsMaxCount = isNaN(parseInt(args.tagsMaxCount)) ? Infinity : Math.abs(parseInt(args.tagsMaxCount));
this.TriggerTagAdd = (args.TriggerTagAdd || 'ENTER|SPACE|BLUR').toUpperCase().split('|');
this.ignoreSpace = args.ignoreSpace || false;
this.disableEnterTriggerTagAdd = true;
this.disableSpaceTriggerTagAdd = true;
this.disableBlurTriggerTagAdd = true;
this.clickRemove = args.clickRemove;
for (var i in this.TriggerTagAdd) {
switch (this.TriggerTagAdd[i]) {
case 'ENTER':
this.disableEnterTriggerTagAdd = false;
break;
case 'SPACE':
this.disableSpaceTriggerTagAdd = false;
break;
case 'BLUR':
this.disableBlurTriggerTagAdd = false;
break;
}
}
this.validation = args.validation;
this.onTagAdd = args.onTagAdd;
this.onTagRemove = args.onTagRemove;
this.onTagsInputComplete = args.onTagsInputComplete;
// Bind events
var self = this;
if (self.clickRemove) {
this.tagsBox.on('click', '.tag', function (e) {
removeTag.call(self, $(this));
if ($('.tag', self.tagsBox).length < self.tagsMaxCount) {
self.tagsInput.show();
}
});
}
else {
this.tagsBox.on('click', function (e) {
var evtSrc = $(e.target);
if (evtSrc.hasClass('remove')) {
removeTag.call(self, evtSrc.parent());
if ($('.tag', self.tagsBox).length < self.tagsMaxCount) {
self.tagsInput.show();
}
} else {
self.tagsInput.focus();
}
});
}
this.keyHoldOn = false;
this.tagsInput.on({
'keydown': function(e) {
switch (e.which) {
case 8: // Backspace
if (!self.tagsInput.val() && !self.keyHoldOn) {
removeTag.call(self, $('.tag', self.tagsBox).last());
} else {
self.keyHoldOn = true;
}
break;
case 32: // Space
if (!self.disableSpaceTriggerTagAdd) {
buildTags.call(self);
e.preventDefault();
}
break;
case 13: // Enter
if (!self.disableEnterTriggerTagAdd) {
buildTags.call(self);
// e.preventDefault();
}
break;
default:
}
},
'keyup': function(e) {
self.keyHoldOn = false;
},
'focus': function(e) {
clearTimeout('timer');
},
'focusout': function(e) {
if (!self.disableBlurTriggerTagAdd) {
// focusout 延迟 300ms 触发 buildTags
timer = setTimeout(function() {
buildTags.call(self);
}, 300);
}
}
});
}
};
TagsInput.prototype = {
constructor: TagsInput,
buildTags: function() {
buildTags.call(this);
},
addTags: function(tagsData) {
var tagHTML = '';
for (var i in tagsData) {
tagHTML += addTag.call(this, tagsData[i]).tagHTML;
}
return tagHTML;
},
addTagHandle: function (tag) {
return addTag.call(this, tag).tag;
},
getTags: function() {
var tags = [];
this.tagsBox.children('.tag').each(function() {
var obj = {
text: $(this).children('.tag-con').text()
};
var data = $(this).data();
if (data) {
obj.data = data;
}
tags.push(obj);
});
return tags;
},
resetTags: function(tagsStr) {
if (tagsStr && typeof(tagsStr) == 'string') {
$('.tag', this.tagsBox).remove();
buildTags.call(self);
}
}
};
module.exports = TagsInput;
});
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